It must be a combination of $-driven 'suits' who don't view any series (no matter how good or base) as drama or opera anymore, but only as terminally dumbing drivel that happens between commercials, AND really BAD composers who are trying so hard to qualify for, and be recognized as DJs, the higher rank these days - and not of David Holmes quality. I know I would do a proper job unless the producers/directors threw it out the window and demanded I DJed, in which case - surprise! - I would walk out, stuff the money if that crap is to be credited with my name on the screen...
Meaning, that I only want music of quality to be publicly available under my name, of as much quality as I am capable, and I think all the memorable past composers wished this, as well as anyone today worth the title. That is why I also blame the compos(t)ers. If they say "why sweat it, this assignment is not worth our 100%", I say listen to the greats; they don't care about the quality of the project (if they really need money they take it, sure), but they never drop the standards of their own work - from Prokofiev to Rose, the serious ones, the ones that have bled to acquire their art and only use the technology as convenience (not dependence!), they care what they leave for posterity, they care about being able the following day to look colleagues in the eye, they care about those learned colleagues saying "great work that track yesterday"...